*2026/01/16 10:37:52.64 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/04/28 23:34:31.000 END TIME : UTC 2025/04/28 23:34:49.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 93 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 27.72 2 Depth metres 0.15 27.72 3 Temperature 'deg C (ITS90)' 10.591 11.719 4 Conductivity S/m 2.5244 2.98243 5 Conductance:Specific S/m 3.43746 4.18987 6 Salinity PSS-78 21.2 26.25 7 Speed:Sound m/s 1479.25 1481.82 8 Density kg/m^3 1015.943 1020.162 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' 7 F R4 2 2 -99 ' ' 7 F R4 2 3 -99 ' ' 8 F R4 3 4 -99 ' ' 10 F R4 5 5 -99 ' ' 10 F R4 5 6 -99 ' ' 7 F R4 2 7 -99 ' ' 8 F R4 2 8 -99 ' ' 9 F R4 3 $END *ADMINISTRATION MISSION : 2025-087 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 115 LATITUDE : 49 9.06550 N ! (deg min) LONGITUDE : 125 47.39140 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250428_233431 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:28 93 93 MERGEHDR 1.3 2026/01/16 10:35:42 93 93 HDREDIT2 3.2 2026/01/16 10:36:13 ? ? REMOVECH 8.2 2026/01/16 10:36:40 93 93 CALIB 12.1 2026/01/16 10:37:16 93 93 CLEAN 5.3 2026/01/16 10:37:52 93 93 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:13 Applied edit header: C:\Users\huntingtons\Desktop\Misc_Projects\Castaway\castaway2023_HDR.txt Channel 2: Depth [metres] Format: F10.6 ==> F7.2 Channel 3: Temperature [deg C (ITS90)] Format: F14.6 ==> F8.3 Channel 4: Conductivity [mS/cm] Units: ms/cm ==> mS/cm Format: F14.6 ==> F9.1 Channel 5: Conductance:Specific [mS/cm] Name: Specific Conductance ==> Conductance:Specific Units: ms/cm ==> mS/cm Format: F14.6 ==> F9.1 Channel 6: Salinity [PSS-78] Format: F14.6 ==> F7.2 Channel 7: Speed:Sound [m/s] Name: Sound Velocity ==> Speed:Sound Format: F14.6 ==> F8.2 Channel 8: Density [kg/m^3] Format: F14.6 ==> F9.3 -REMOVECH 2026/01/16 10:36:40 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:16 Calibration type = Correct Mode: ONLY - calibration specs from Cal File only. Calibration file = C:\Users\huntingtons\Desktop\Misc_Projects\Castaway\recal-cond.CCF Calibrations applied: Ch Name Units Fmla Coefficents -- ----------------------------- --------- --- ----------------------------- 4 Conductivity S/m 10 0.0000000E+00 0.1000000E-03 5 Conductance:Specific S/m 10 0.0000000E+00 0.1000000E-03 -CLEAN functions: 2026/01/16 10:37:42 20 Reset #RECS, MIN & MAX values in header. Set header Start and End times from the data. $END *COMMENTS Data Processing Notes: The CastAway-CTD is a small profiling instrument that measures conductivity, temperature, and pressure. Its embedded firmware controls all of the instrument's functions. It is designed for profiling to depths of up to 100m at 5 Hz. It uses a six electrode flow-through conductivity cell with zero external field coupled with a rapid response thermistor (<5Hz) to attain high measurement accuracies. The instrument does not require a pump and is hydrodynamically designed to free fall rate of 1 m/s. Processing was done using the CastAway CTD data processing system which included the following steps: - Pressure correction to remove ambient atmospheric pressure. - Removal of records obtained while the system was stationary. - De-spiking of conductivity data to remove erratic measurements near the water surface that can be caused by air bubbles trapped in the conductivity flow cell. - Bin-averaging with 0.3db bins with linear interpolation used to fill empty bins or the nearest available value for surface or bottom bins. - Combination of downcast and upcast data using a weighted average based on fall velocity. - Derivation of specific conductance, salinity, sound speed, density and depth for each pressure bin. The data were converted to IOS Header format. Calibration dates were taken from the original data file header: % Samples per second,5 % Electronics calibration date,0001-01-01 % Conductivity calibration date,2020-03-13 % Temperature calibration date,2020-03-12 % Pressure calibration date,2020-03-04 % *CALIBRATION $TABLE: CORRECTED CHANNELS ! Name Units Fmla Pad Coefficients ! ---------------------- ----- ---- ------ ------------ Conductivity S/m 10 -99 () (0 0.1E-03) Conductance:Specific S/m 10 -99 () (0 0.1E-03) $END !--1--- --2--- ---3--- ----4---- ----5---- --6--- ---7--- ---8---- !Pressu Depth Tempera Conductiv Conductan Salini Speed: Density !re ture ity ce: ty Sound ! Specific !------ ------ ------- --------- --------- ------ ------- -------- *END OF HEADER 0.15 0.15 11.719 2.52440 3.43746 21.20 1479.39 1015.943 0.45 0.45 11.633 2.53392 3.45850 21.33 1479.25 1016.064 0.75 0.75 11.574 2.62318 3.58616 22.20 1480.06 1016.742 1.05 1.05 11.523 2.64683 3.62354 22.45 1480.19 1016.945 1.35 1.35 11.397 2.68377 3.68677 22.87 1480.24 1017.293 1.65 1.65 11.296 2.71280 3.73700 23.20 1480.29 1017.570 1.95 1.95 11.257 2.74613 3.78701 23.54 1480.56 1017.840 2.25 2.26 11.178 2.78049 3.84279 23.92 1480.72 1018.145 2.55 2.56 11.115 2.79118 3.86426 24.06 1480.67 1018.267 2.85 2.86 11.069 2.79963 3.88099 24.17 1480.64 1018.361 3.15 3.16 11.012 2.82026 3.91577 24.40 1480.72 1018.553 3.45 3.46 10.995 2.82652 3.92627 24.47 1480.75 1018.612 3.75 3.76 10.974 2.82959 3.93285 24.52 1480.73 1018.650 4.05 4.06 10.948 2.83186 3.93881 24.56 1480.69 1018.686 4.35 4.36 10.921 2.83524 3.94645 24.61 1480.66 1018.730 4.65 4.66 10.902 2.84795 3.96626 24.74 1480.76 1018.839 4.95 4.96 10.875 2.86045 3.98672 24.88 1480.83 1018.952 5.25 5.26 10.828 2.87305 4.00951 25.03 1480.85 1019.079 5.55 5.56 10.799 2.88079 4.02351 25.13 1480.86 1019.157 5.85 5.86 10.788 2.88006 4.02377 25.13 1480.82 1019.161 6.15 6.16 10.754 2.88751 4.03808 25.22 1480.82 1019.242 6.45 6.46 10.738 2.89305 4.04761 25.29 1480.84 1019.296 6.75 6.76 10.718 2.89802 4.05679 25.35 1480.85 1019.348 7.05 7.06 10.711 2.89765 4.05706 25.35 1480.83 1019.351 7.35 7.36 10.712 2.89718 4.05630 25.34 1480.83 1019.348 7.65 7.66 10.709 2.89646 4.05561 25.34 1480.82 1019.346 7.95 7.96 10.700 2.89626 4.05638 25.34 1480.80 1019.352 8.25 8.26 10.695 2.89658 4.05737 25.35 1480.79 1019.359 8.55 8.56 10.691 2.89609 4.05719 25.35 1480.78 1019.360 8.85 8.86 10.687 2.89787 4.06009 25.37 1480.80 1019.377 9.15 9.16 10.681 2.89923 4.06270 25.38 1480.80 1019.393 9.45 9.46 10.676 2.89757 4.06096 25.37 1480.77 1019.385 9.75 9.76 10.671 2.89921 4.06380 25.39 1480.78 1019.402 10.05 10.06 10.667 2.90316 4.06982 25.43 1480.82 1019.436 10.35 10.36 10.659 2.90540 4.07388 25.46 1480.83 1019.460 10.65 10.66 10.654 2.90932 4.07995 25.50 1480.87 1019.494 10.95 10.96 10.650 2.90994 4.08129 25.51 1480.87 1019.503 11.25 11.26 10.648 2.91269 4.08536 25.54 1480.90 1019.526 11.55 11.56 10.647 2.91456 4.08811 25.55 1480.92 1019.542 11.85 11.86 10.645 2.91756 4.09251 25.58 1480.96 1019.567 12.15 12.16 10.644 2.91667 4.09142 25.58 1480.95 1019.563 12.45 12.46 10.637 2.92082 4.09807 25.62 1480.98 1019.600 12.75 12.76 10.631 2.92482 4.10429 25.66 1481.02 1019.635 13.05 13.06 10.629 2.92577 4.10587 25.67 1481.03 1019.645 13.35 13.36 10.628 2.92658 4.10713 25.68 1481.04 1019.653 13.65 13.66 10.627 2.92527 4.10536 25.67 1481.02 1019.645 13.95 13.96 10.627 2.92834 4.10969 25.70 1481.06 1019.670 14.25 14.26 10.628 2.93141 4.11390 25.73 1481.11 1019.693 14.55 14.56 10.628 2.93153 4.11413 25.73 1481.11 1019.696 14.85 14.86 10.628 2.93011 4.11208 25.72 1481.10 1019.686 15.15 15.16 10.629 2.92828 4.10936 25.70 1481.09 1019.673 15.45 15.46 10.633 2.92920 4.11027 25.70 1481.11 1019.679 15.75 15.76 10.635 2.93306 4.11540 25.74 1481.17 1019.707 16.05 16.06 10.632 2.93957 4.12488 25.81 1481.24 1019.760 16.35 16.36 10.628 2.94835 4.13770 25.89 1481.34 1019.830 16.65 16.66 10.620 2.95320 4.14544 25.95 1481.38 1019.873 16.95 16.96 10.614 2.95864 4.15379 26.00 1481.43 1019.920 17.25 17.26 10.611 2.95989 4.15592 26.02 1481.44 1019.933 17.55 17.56 10.607 2.96430 4.16253 26.06 1481.49 1019.970 17.85 17.86 10.604 2.96855 4.16879 26.10 1481.53 1020.005 18.15 18.16 10.601 2.97108 4.17269 26.13 1481.56 1020.028 18.45 18.46 10.598 2.97190 4.17420 26.14 1481.56 1020.037 18.75 18.75 10.597 2.97434 4.17779 26.17 1481.59 1020.058 19.05 19.05 10.597 2.97612 4.18033 26.18 1481.62 1020.073 19.35 19.35 10.596 2.97664 4.18115 26.19 1481.63 1020.079 19.65 19.65 10.596 2.97699 4.18168 26.19 1481.64 1020.083 19.95 19.95 10.595 2.97696 4.18175 26.19 1481.64 1020.085 20.25 20.25 10.595 2.97742 4.18231 26.20 1481.65 1020.089 20.55 20.55 10.596 2.97771 4.18258 26.20 1481.66 1020.091 20.85 20.85 10.596 2.97741 4.18222 26.20 1481.66 1020.091 21.15 21.15 10.596 2.97686 4.18151 26.19 1481.66 1020.088 21.45 21.45 10.595 2.97717 4.18198 26.19 1481.67 1020.092 21.75 21.75 10.595 2.97752 4.18254 26.20 1481.67 1020.097 22.05 22.05 10.594 2.97793 4.18321 26.20 1481.68 1020.102 22.35 22.35 10.594 2.97848 4.18396 26.21 1481.69 1020.107 22.65 22.65 10.593 2.97826 4.18380 26.21 1481.69 1020.107 22.95 22.95 10.593 2.97828 4.18375 26.21 1481.70 1020.108 23.25 23.25 10.592 2.97860 4.18436 26.21 1481.70 1020.113 23.55 23.55 10.592 2.97923 4.18528 26.22 1481.71 1020.119 23.85 23.85 10.592 2.97966 4.18591 26.22 1481.72 1020.124 24.15 24.15 10.591 2.98038 4.18697 26.23 1481.73 1020.131 24.45 24.45 10.591 2.98006 4.18654 26.22 1481.74 1020.130 24.75 24.75 10.591 2.98013 4.18661 26.22 1481.74 1020.132 25.05 25.05 10.594 2.97918 4.18497 26.21 1481.74 1020.124 25.35 25.35 10.593 2.98037 4.18672 26.22 1481.76 1020.135 25.65 25.65 10.593 2.98146 4.18823 26.24 1481.78 1020.144 25.95 25.95 10.593 2.98092 4.18756 26.23 1481.77 1020.142 26.25 26.25 10.593 2.98069 4.18722 26.23 1481.78 1020.141 26.55 26.55 10.593 2.98083 4.18741 26.23 1481.78 1020.143 26.85 26.85 10.593 2.98192 4.18892 26.24 1481.80 1020.153 27.15 27.15 10.591 2.98206 4.18930 26.24 1481.80 1020.156 27.45 27.45 10.591 2.98240 4.18987 26.25 1481.81 1020.161 27.72 27.72 10.591 2.98243 4.18987 26.25 1481.82 1020.162